Trouble getting brake fluid to flow - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 04-24-2013, 08:38 AM
Registered User
 
Last photo:
Join Date: Dec 2011
Posts: 76
Wiki Edits: 0

Thanks: 28
Thanked 3 Times in 3 Posts
Trouble getting brake fluid to flow

I've got a 1950 Jeepster with a new disc drum brake set up I'm trying to bleed. It has new lines, residual valves in the correct flow, wheel cylinders, and a new Speedway power brake and master cyclinder. I've bench bled the master cyclinder and am trying to vacuum bleed the lines. However, I don't seem to be getting much fluid throught the master cylinder. When I depress the pedal, there isn't much coming out of the master cylinder and no fluid at the wheel cyclinders. Is there something I'm missing to get the fluid into the lines so I can start to bleed them? Thanks for any help, Tom

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 04-24-2013, 10:28 AM
richard stewart 3rd's Avatar
Registered User
 

Last journal entry: 351W rebuild
Last photo:
Join Date: Jan 2006
Location: tremont, pa.
Age: 70
Posts: 2,218
Wiki Edits: 0

Thanks: 14
Thanked 15 Times in 14 Posts
Hi Tom
Whenever I change brake lines, wheel cylinders, calibers, or m.c. I open all the bleeders & let gravity do the work, then close each bleeder as it starts dripping,
when I've closed them all, I start the vacuum bleeding. Works for me.
Good luck,
Rich
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 04-24-2013, 03:45 PM
RWENUTS's Avatar
Registered User
 
Last photo:
Join Date: Nov 2011
Location: Nanaimo, BC, Canada
Age: 63
Posts: 1,981
Wiki Edits: 0

Thanks: 59
Thanked 212 Times in 200 Posts
What's your pedal ratio?
You might not have enough travel in the push rod.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 04-25-2013, 09:55 AM
Registered User
 
Last photo:
Join Date: Dec 2011
Posts: 76
Wiki Edits: 0

Thanks: 28
Thanked 3 Times in 3 Posts
I'm not sure about the ratio. However, the MC and pedal came as a kit from Speedway. The rod is adjustable and I have at least 5" of pedal travel. I opened the bleeders yesterday, but so far no fluid is visible. I'll try the vacuum pump again, and if no go, I'll go back to the pump and hold 2 person method. Thanks, Tom.
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 04-25-2013, 10:18 AM
NEW INTERIORS's Avatar
Believe in yourself !!!!!!
 

Last journal entry: 41 WILLYS FRAME
Last photo:
Join Date: Jul 2007
Location: In My Shop..
Age: 49
Posts: 10,096
Wiki Edits: 0

Thanks: 1,248
Thanked 549 Times in 407 Posts
If you have drum's in the back,, Set them tight for now,, Then after your done bleeding them back them off,,, This is a trick that I find that works well,,, When you first starting to bleed a new system this is a great way to get it started,,

Last edited by NEW INTERIORS; 04-25-2013 at 10:45 AM.
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 04-25-2013, 06:02 PM
killeratrod's Avatar
Registered User
 
Last photo:
Join Date: Nov 2012
Location: Florida
Posts: 2,274
Wiki Edits: 0

Thanks: 169
Thanked 413 Times in 369 Posts
just a thought did you blow air thru the new lines to clean them? Maybe something in their !
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 04-25-2013, 07:35 PM
Registered User
 
Last photo:
Join Date: Dec 2011
Posts: 76
Wiki Edits: 0

Thanks: 28
Thanked 3 Times in 3 Posts
I unhooked the rear line at the Master cyclinder and blew air through with the farthest rear brake bleeder open, and got nothing. The residual valve is in the correct in/out set/up and the proportioning valve is open to full flow. Now I'll unhook the line at the rear of the prop. valve and blow from the mc and then blow the line after the prop valve to see what's blocking. I may be on the right track. The mc is pushing fluid but the vacuum pump isn't pulling anything either front or rear. I think I'll forget the vacuum pump and try the pump and hold bleeding process once I get the line blockage figured out. Thanks again, Tom.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 04-25-2013, 08:13 PM
NEW INTERIORS's Avatar
Believe in yourself !!!!!!
 

Last journal entry: 41 WILLYS FRAME
Last photo:
Join Date: Jul 2007
Location: In My Shop..
Age: 49
Posts: 10,096
Wiki Edits: 0

Thanks: 1,248
Thanked 549 Times in 407 Posts
Quote:
Originally Posted by T Evans View Post
I think I'll forget the vacuum pump and try the pump and hold bleeding process once I get the line blockage figured out. Thanks again, Tom.
I think I would have done that from the begainning...I never use a vacuum pump to bleed brakes.... Pump and hold is the only way.. For me anyway..
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 04-26-2013, 02:08 PM
ogre's Avatar
the 'Duracell Project'
 
Last photo:
Join Date: Nov 2009
Location: Motown
Posts: 1,412
Wiki Edits: 0

Thanks: 0
Thanked 107 Times in 95 Posts
i like jeepsters
i need pics
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 04-28-2013, 11:53 AM
Registered User
 
Last photo:
Join Date: Dec 2011
Posts: 76
Wiki Edits: 0

Thanks: 28
Thanked 3 Times in 3 Posts
Problem solved. The rear brake line from the master cylinder to the residual valve was plugged. Who would have thought that a new line off the NAPA shelf would be plugged. Lesson learned: Blow out the lines before and after making any bends. Thanks for all the help, Tom
Reply With Quote Quick reply to this message
The Following User Says Thank You to T Evans For This Useful Post:
NEW INTERIORS (04-28-2013)
  #11 (permalink)  
Old 04-28-2013, 01:22 PM
NEW INTERIORS's Avatar
Believe in yourself !!!!!!
 

Last journal entry: 41 WILLYS FRAME
Last photo:
Join Date: Jul 2007
Location: In My Shop..
Age: 49
Posts: 10,096
Wiki Edits: 0

Thanks: 1,248
Thanked 549 Times in 407 Posts
It happens...
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
700r4 fluid direction of flow JFPeters Transmission - Rearend 4 04-07-2011 09:48 PM
700R4 fluid flow pittbull7934 Transmission - Rearend 2 09-19-2009 12:49 PM
TH350 fluid flow in cooler Jmark Transmission - Rearend 2 04-27-2004 07:14 AM
TH-350 fluid flow Busted Knuckles Transmission - Rearend 3 01-07-2003 04:37 PM
How much brake fluid? Limey Simon Suspension - Brakes - Steering 2 10-30-2002 12:36 AM


All times are GMT -6. The time now is 10:27 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.